Question

The area of a rectangular fountain is x2 + 12x + 20 square feet. A 5-foot walkway is built around the

fountain. Find the dimensions of the outside border of the walkway.

Answer 1

x + 7 ft and x + 15 ft as the dimensions of the outside border of the walkway.

Explanation:

`x^(2) +12x + 20 = (x + 2)(x + 10)`

The dimensions of the fountain is x + 2 and x + 10

Adding the 5-ft walkway, we get x + 7 ft and x + 15 ft as the dimensions of the outside border of the walkway.